.ANALOG CIRCUITS Edited by Yuping Wu .Analog Circuits Edited by Yuping Wu Contributors Tales Pimenta, Gustavo Della Colletta, Odilon Dutra, Paulo Cesar Crepaldi, Leonardo Zoccal, Luis Ferreira, Tomasz Golonek, Piotr Jantos, Fawzi Mohammed Munir Al-Naima, Bessam Al-Jewad, Soumyasanta Laha, Savas Kaya, Zygmunt Garczarczyk Published by InTech Janeza Trdine 9, 51000 Rijeka, Croatia Copyright © 2013 InTech All chapters are Open Access distributed under the Creative Commons Attribution license, which allows users to download, copy and build upon published articles even for commercial purposes, as long as the author and publisher are properly credited, which ensures maximum dissemination and a wider impact of our.